Home / 139,946.12-193,127.68-76,283.94

Finding the Fourth Proportional to 139,946.12, 193,127.68 and 76,283.94

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Solution

The fourth proportional to 139,946.12, 193,127.68 and 76,283.94 is: 105,272.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,946.12 : 193,127.68 = 76,283.94 : x
  2. Step 2: Convert to fraction form
    139,946.12/193,127.68 = 76,283.94/x
  3. Step 3: Cross multiply
    139,946.12x = 193,127.68 × 76,283.94
  4. Step 4: Simplify right side
    139,946.12x = 14,732,540,353.46
  5. Step 5: Solve for x
    x = 14,732,540,353.46/139,946.12
  6. Step 6: Final answer
    x = 105,272.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.